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Superior semicircular canal dehiscence syndrome (left ear). In the affected ear there are abnormally large oVEMP and cVEMP reflexes with low reflex thresholds while the audiogram shows a low-frequency air-bone gap with increased air-conducted thresholds in dB SPL). Temporal bone CT scan shows a dehiscence over the left anterior (superior) canal. All other audiovestibular tests results fall within normal limits.
